Enhanced resistance of GhWRKY15 -overexpressing tobacco to fungi. (A) Leaf symptoms of tobacco plants infected with fungi. The detached leaves in transgenic and wild-type tobacco were inoculated with C. gossypii or P. parasitica suspensions (106 conidia/ml) prepared in 1% glucose, and the leaves were photographed 7 days after inoculation. (B) The diameters of the lesions on the inoculated leaves. The diameters of the lesion spots were recorded using the following scoring system: 0, < 1 mm; 1, 1–2 mm; 2, > 2 mm. (C) The numbers of lesions on the inoculated leaves. The number of lesions per 10 cm2 was counted on the inoculated leaves of three independent transgenic and wild-type plants. The values indicated by the different letters are significantly different at P < 0.05, as determined using Duncan’s multiple range tests.